Net Income Per Ordinary Share (Tables)

9 Months Ended

Oct. 31, 2017

Computation of Basic and Diluted Net Income Per Ordinary Share

The following table sets forth the computation of basic and diluted net income per ordinary share for the periods indicated:

	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
	(in thousands, except share and per share data)
Numerator:
Net income	$	11,724	$	29,045	$	17,591	$	39,460
Denominator:
Weighted-average ordinary shares - basic		33,128,761		32,670,784		33,203,432		32,552,077
Effect of potentially dilutive securities:
Employee stock options		913,496		1,159,739		967,903		1,094,786
Restricted stock and restricted stock units		311,430		753,178		363,476		583,144
Employee stock purchase plan		5,206		16,291		4,157		12,058
Weighted-average ordinary shares - diluted		34,358,893		34,599,992		34,538,968		34,242,065
Net income per ordinary share:
Basic	$	0.35	$	0.89	$	0.53	$	1.21
Diluted	$	0.34	$	0.84	$	0.51	$	1.15

Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Income Per Ordinary Share

The following weighted-average potentially dilutive securities were excluded from the computation of diluted net income per ordinary share as their effect would have been antidilutive:

	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Options to purchase ordinary shares		290,648		189,147		274,629		380,460
Restricted stock and restricted stock units		1,224,115		606,843		977,904		900,701
Employee stock purchase plan		36,076		24,221		20,675		19,534
		1,550,839		820,211		1,273,208		1,300,695